<div class="layui-form layui-form-pane" style="padding: 20px;">
    <div class="layui-upload">
        <button type="button" class="layui-btn layui-btn-normal" id="upload">选择多文件</button>
        <button id="upload_start" class="layui-btn">开始上传</button>
        <div class="layui-upload-list">
            <table class="layui-table">
                <thead>
                <tr><th>文件名</th>
                    <th>大小</th>
                    <th>状态</th>
                    <th>操作</th>
                </tr></thead>
                <tbody id="photo_list">

                </tbody>
            </table>
        </div>
    </div>

    <div class="layui-form-item">
        <button id="add" class="layui-btn layui-btn-fluid layui-bg-cyan">提交</button>
    </div>
</div>

<script>
    //上传图片
    layui.use('upload', function(){
        var upload = layui.upload;
        //多文件列表
        var photoListView = $('#photo_list');
        var uploadListIns = upload.render({
            elem: '#upload',
            url: '/handler/upload/uploadImage',
            accept: 'images',
            acceptMime: 'image/*',
            multiple: true,
            auto: false,
            bindAction: '#upload_start',
            choose: function(obj){
                //将每次选择的文件追加到文件队列
                var files = this.files = obj.pushFile();
                //读取本地文件
                obj.preview(function(index, file, result){
                    var tr = $([
                        '<tr id="upload-'+ index +'" class="upload_item" data-title="'+file.name+'" data-size="'+(file.size/1014).toFixed(1)+'kb">',
                        '<td>'+ file.name +'</td>',
                        '<td>'+ (file.size/1014).toFixed(1) +'kb</td>',
                        '<td>等待上传</td>',
                        '<td>',
                        '<button class="layui-btn layui-btn-xs demo-reload layui-hide">重传</button>',
                        '<button class="layui-btn layui-btn-xs layui-btn-danger demo-delete">删除</button>',
                        '</td>',
                        '</tr>'
                    ].join(''));
                    //单个重传
                    tr.find('.demo-reload').on('click', function(){
                        obj.upload(index, file);
                    });
                    //删除
                    tr.find('.demo-delete').on('click', function(){
                        //删除对应的文件
                        delete files[index];
                        tr.remove();
                        //清空 input file 值，以免删除后出现同名文件不可选
                        uploadListIns.config.elem.next()[0].value = '';
                    });
                    photoListView.append(tr);
                });
            },
            done: function(res, index, upload){
                if(res.ret == 1){
                    //上传成功
                    var tr = photoListView.find('tr#upload-'+index);
                    var tds = tr.children();
                    tr.attr('data-url',res.url);
                    tds.eq(2).html('<span style="color: #5FB878;">上传成功</span>');
                    tds.eq(3).html(''); //清空操作
                    //删除文件队列已经上传成功的文件
                    return delete this.files[index];
                }
                this.error(index, upload);
            },
            error: function(index, upload){
                var tr = photoListView.find('tr#upload-'+ index);
                var tds = tr.children();
                tds.eq(2).html('<span style="color: #FF5722;">上传失败</span>');
                tds.eq(3).find('.demo-reload').removeClass('layui-hide'); //显示重传
            }
        });
    });
</script>